Quinapril

Quinapril EP Impurity A Quinapril Impurity A :

(S)-1,2,3,4-Tetrahydroisoquinoline-3-carboxylic acid ; CAS : 74163-81-8 ; C10H11NO2 ; MW: 177.20 ;
Quinapril EP Impurity B Quinapril Impurity B:

(2S)-2-[[(1S)-1-(Ethoxycarbonyl)-3-phenylpropyl]amino] propanoic acid ; CAS : 82717-96-2 ;

C15H21NO4 ; MW: 279.33 ;
Quinapril EP Impurity C Quinapril Impurity C:[3S-[2[R*(R*)],3R*]]-2-[2-[(1-Carboxy-3-phenylpropyl)amino]-1-oxopropyl]-1,2,3,4-tetrahydro-3-isoquinolinecarboxylic acid ; CAS : 82768-85-2 ; C23H26N2O5 ; MW: 410.46 ;
Quinapril EP Impurity D Quinapril Impurity D:

Ethyl (2S)-2-[(3S,11aS)-3-methyl-1,4-dioxo-1,3,4,6,11,11ahexahydro-2H-pyrazino[1,2-b]isoquinolin-2-yl]-4-phenylbutanoate ; CAS : 103733-49-9 ; C25H28N2O4 ; MW: 420.5 ;
Quinapril EP Impurity E Quinapril Impurity E:

 (S)-2-[(S)-N-[(S)-1-Carboxy-3-cyclohexylpropyl]alanyl]-1,2,3,4-tetrahydro-3-isoquinolinecarboxylic acid, 1-ethyl ester HCl ;

C25H36N2O5 (base) ; MW: 444.56 ; C25H37ClN2O5 (HCl salt) ; MW: 481.02 ;
Quinapril EP Impurity G Quinapril  Impurity G:

(3R)-2-[(2S)-2-[[(1S)-1-(Ethoxycarbonyl)-3-phenylpropyl]amino]propanoyl]-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid ; CAS :103775-06-0 ; C25H30N2O5 ;
Mol. Wt.: 438.52 ;
Quinapril EP Impurity H Quinapril  Impurity H:

(3R)-2-[(2S)-2-[[(1R)-1-(Ethoxycarbonyl)-3-phenylpropyl]amino]propanoyl]-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid ; C25H30N2O5 ; Mol. Wt.: 438.52 ;
Quinapril EP Impurity I Quinapril  Impurity I:

(3S)-2-[(2S)-2-[[(1R)-1-(Ethoxycarbonyl)-3-phenylpropyl]amino]propanoyl]-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid ; C25H30N2O5 ;Mol. Wt.: 438.52 ;
Quinapril EP Impurity J Quinapril  Impurity J:

(1R,3S)-2-[(2S)-2-[[(1S)-1-(Ethoxycarbonyl)-3-phenylpropyl](hydroxy)amino] propanoyl]-1-hydroxy-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid ; C25H30N2O7 ;  Mol. Wt.: 470.51 ;
Quinapril EP Impurity M Quinapril  Impurity M:

(1R,3S)-2-[(2S)-2-[[(1S)-1-(Ethoxycarbonyl)-3-phenylpropyl]amino]propanoyl]-1-hydroperoxy-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid ; C25H30N2O7 ; Mol. Wt.: 470.51